automatic restarting countdown timer for website

Hello,

i am trying to add a countdown timer to the header of my website. I need it to restart and end at the same date and time every week. My customers have to place orders for delivery within a certain time frame for weekly delivery, and I want to have a timer in the header, so that customers know when the order cutoff time has been reached... Help!!!

I have this same question - just wondering if you found a solution?